HADOOP-2288. Enhance FileSystem API to support access control.

Unit Test cases.  (Tsz Wo (Nicholas), SZE via dhruba)



git-svn-id: https://svn.apache.org/repos/asf/lucene/hadoop/trunk@600965 13f79535-47bb-0310-9956-ffa450edef68

src/test/org/apache/hadoop/fs/permission/TestFsPermission.java

@@ -0,0 +1,70 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.fs.permission;
+
+import junit.framework.TestCase;
+
+import static org.apache.hadoop.fs.permission.FsAction.*;
+
+public class TestFsPermission extends TestCase {
+  public void testFsAction() {
+    //implies
+    for(FsAction a : FsAction.values()) {
+      assertTrue(ALL.implies(a));
+    }
+    for(FsAction a : FsAction.values()) {
+      assertTrue(a == NONE? NONE.implies(a): !NONE.implies(a));
+    }
+    for(FsAction a : FsAction.values()) {
+      assertTrue(a == READ_EXECUTE || a == READ || a == EXECUTE || a == NONE?
+          READ_EXECUTE.implies(a): !READ_EXECUTE.implies(a));
+    }
+
+    //masks
+    assertEquals(EXECUTE, EXECUTE.and(READ_EXECUTE));
+    assertEquals(READ, READ.and(READ_EXECUTE));
+    assertEquals(NONE, WRITE.and(READ_EXECUTE));
+
+    assertEquals(READ, READ_EXECUTE.and(READ_WRITE));
+    assertEquals(NONE, READ_EXECUTE.and(WRITE));
+    assertEquals(WRITE_EXECUTE, ALL.and(WRITE_EXECUTE));
+  }
+
+  public void testFsPermission() {
+    for(short s = 0; s < (1<<9); s++) {
+      assertEquals(s, new FsPermission(s).toShort());
+    }
+
+    String symbolic = "-rwxrwxrwx";
+    StringBuilder b = new StringBuilder("-123456789");
+    for(int i = 0; i < (1<<9); i++) {
+      for(int j = 1; j < 10; j++) {
+        b.setCharAt(j, '-');
+      }
+      String binary = Integer.toBinaryString(i);
+      int len = binary.length();
+      for(int j = 0; j < len; j++) {
+        if (binary.charAt(j) == '1') {
+          int k = 9 - (len - 1 - j);
+          b.setCharAt(k, symbolic.charAt(k));
+        }
+      }
+      assertEquals(i, FsPermission.valueOf(b.toString()).toShort());
+    }
+  }
+}